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from collections import Counter
from itertools import chain
from django.shortcuts import get_object_or_404
from django_filters.rest_framework import DjangoFilterBackend
from rest_framework import generics, filters
from rest_framework.permissions import IsAuthenticated, IsAdminUser
from rest_framework.response import Response
from rest_framework.views import APIView
from .models import Project, Label, Document
from .models import SequenceAnnotation
from .permissions import IsAdminUserAndWriteOnly, IsProjectUser, IsMyEntity
from .serializers import ProjectSerializer, LabelSerializer, DocumentSerializer
from .serializers import SequenceAnnotationSerializer
class ProjectList(generics.ListCreateAPIView):
queryset = Project.objects.all()
serializer_class = ProjectSerializer
pagination_class = None
permission_classes = (IsAuthenticated, IsAdminUserAndWriteOnly)
def get_queryset(self):
return self.request.user.projects
def create(self, request, *args, **kwargs):
request.data['users'] = [self.request.user.id]
return super().create(request, args, kwargs)
class ProjectDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = Project.objects.all()
serializer_class = ProjectSerializer
lookup_url_kwarg = 'project_id'
permission_classes = (IsAuthenticated, IsProjectUser, IsAdminUserAndWriteOnly)
class StatisticsAPI(APIView):
pagination_class = None
permission_classes = (IsAuthenticated, IsProjectUser, IsAdminUserAndWriteOnly)
def get(self, request, *args, **kwargs):
p = get_object_or_404(Project, pk=self.kwargs['project_id'])
labels = [label.text for label in p.labels.all()]
users = [user.username for user in p.users.all()]
docs = [doc for doc in p.documents.all()]
nested_labels = [[a.label.text for a in doc.get_annotations()] for doc in docs]
nested_users = [[a.user.username for a in doc.get_annotations()] for doc in docs]
label_count = Counter(chain(*nested_labels))
label_data = [label_count[name] for name in labels]
user_count = Counter(chain(*nested_users))
user_data = [user_count[name] for name in users]
response = {'label': {'labels': labels, 'data': label_data},
'user': {'users': users, 'data': user_data}}
return Response(response)
class LabelList(generics.ListCreateAPIView):
queryset = Label.objects.all()
serializer_class = LabelSerializer
pagination_class = None
permission_classes = (IsAuthenticated, IsProjectUser, IsAdminUserAndWriteOnly)
def get_queryset(self):
queryset = self.queryset.filter(project=self.kwargs['project_id'])
return queryset
def perform_create(self, serializer):
project = get_object_or_404(Project, pk=self.kwargs['project_id'])
serializer.save(project=project)
class LabelDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = Label.objects.all()
serializer_class = LabelSerializer
lookup_url_kwarg = 'label_id'
permission_classes = (IsAuthenticated, IsProjectUser, IsAdminUserAndWriteOnly)
class DocumentList(generics.ListCreateAPIView):
queryset = Document.objects.all()
serializer_class = DocumentSerializer
filter_backends = (DjangoFilterBackend, filters.SearchFilter, filters.OrderingFilter)
search_fields = ('text', )
ordering_fields = ('created_at', 'updated_at')
permission_classes = (IsAuthenticated, IsProjectUser, IsAdminUserAndWriteOnly)
def get_queryset(self):
queryset = self.queryset.filter(project=self.kwargs['project_id'])
return queryset
def perform_create(self, serializer):
project = get_object_or_404(Project, pk=self.kwargs['project_id'])
serializer.save(project=project)
class DocumentDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = Document.objects.all()
serializer_class = DocumentSerializer
lookup_url_kwarg = 'doc_id'
permission_classes = (IsAuthenticated, IsProjectUser, IsAdminUserAndWriteOnly)
class EntityList(generics.ListCreateAPIView):
queryset = SequenceAnnotation.objects.all()
serializer_class = SequenceAnnotationSerializer
pagination_class = None
permission_classes = (IsAuthenticated, IsProjectUser)
def get_queryset(self):
queryset = self.queryset.filter(document=self.kwargs['doc_id'],
user=self.request.user)
return queryset
def perform_create(self, serializer):
doc = get_object_or_404(Document, pk=self.kwargs['doc_id'])
serializer.save(document=doc, user=self.request.user)
class EntityDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = SequenceAnnotation.objects.all()
serializer_class = SequenceAnnotationSerializer
lookup_url_kwarg = 'entity_id'
permission_classes = (IsAuthenticated, IsProjectUser, IsMyEntity)